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The Chomerics Division of Parker Hannifin has reported that its CHO-MUTE 9005 and 9025 elastomer-based microwave absorber materials successfully protect ADAS from EMI, a critical requirement for these life-saving and increasingly essential systems.

ADAS must work effectively 100% of the time. Meeting the high performance and diverse design demands, materials rise to the occasion by absorbing EMI radiation and providing data integrity. Process-essential ADAS components, such as lane detection warning systems and backup cameras, have become crucial to the present-day driving experience.

Advanced sensor and radar assemblies deployed in the latest automobiles experience severe and relentless EMI from surrounding electronics and EMI radiation from the device itself, safety and reliability.

EMI shielding materials are crucial to ensuring these systems function properly every time, without fail. The adopted materials must offer high-performance characteristics and design flexibility, as requirements during development are frequently ambiguous and expansive; engineers should always anticipate a manufacturing modification. While there are various options for EMI protection, absorbers are excellent for the higher frequencies found typically in automotive devices.

The company's elastomer-based microwave absorber materials offer a user-friendly approach to reducing unwanted electromagnetic radiation from electronic equipment while minimising cavity-to-cavity cross-coupling and microwave cavity resonances. Comprised of a silicone elastomer matrix with ferrous filler material, the material provides RF absorption performance over a broadband frequency range from 500MHz to 18GHz. The absorbers are excellent for use on top of EMI-radiating components or in cavities that house components causing EMI disturbances.

The materials provide automotive supply chain manufacturers with many customisation options, enabling them to fulfil any engineering specification. The materials are obtainable in sheet stock of various thicknesses with or without pressure-sensitive adhesive. Customers can easily die-cut CHO-MUTE 9005 and 9025 for empirically testing absorption solutions or assembly into cavities. Both materials have been tested and certified to the UL 94 V-0 flammability standard.